This surveillance photograph was taken by Manhattan
Project security officials. On the right is Gregory Kheifits
(KHARON), the NKGB Resident in San Francisco from 1941 to July 1944.
On the left is his successor, Gregory Kasparov (DAR). In between them
is Martin Kamen, a chemist at the University of California, Berkeley's
"Rad Lab." (Kamen was later dismissed as a "security
risk.")

The photograph below is of Kheifits ca.
1940. It is from "KGB Archives," via Jerrold and Leona
Schecter, Sacred Secrets: How Soviet Intelligence Operations Changed
American History (Washington: Brassey's, 2002).